Flexural Plastic Hinge Length for Reinforced Concrete Frames

Sayed Abd-Allah, Sayed M.; El-Assaly, Mohamed Mostafa; EL-KHOLY, Ahmed M.

doi:10.21608/fuje.2023.228307.1058

	Flexural Plastic Hinge Length for Reinforced Concrete Frames
Fayoum University Journal of Engineering
Volume 7, Issue 1, January 2024, Page 107-114 PDF (739 K)
Document Type: Original Article
DOI: 10.21608/fuje.2023.228307.1058
View on SCiNiTO
Authors
Sayed M. Sayed Abd-Allah ¹; Mohamed Mostafa El-Assaly²; Ahmed M. EL-KHOLY ³
¹Master student In Civil Engineering, Department of Civil Engineering Faculty of Engineering, Fayoum University & Teaching Assistant, Civil Engineering Department, Faculty of Engineering, Beni-Suef University
²Civil Engineering Department Faculty of Engineering, Fayoum University
³Civil Eng. Department, Faculty of Engineering, Fayoum U
Abstract
The flexural plastic hinge (PH) length is a critical parameter for reinforced concrete (RC) frames subjected to lateral load. In this work, a review of past studies for introducing empirical equations for estimating the flexural PH length (lp) of RC frames was introduced. Another key aspect explored in this paper is to study the effect of different available lp equations on the overall nonlinear structural response of RC frames. Therefore, ten lp equations were selected from this review for simulating the nonlinear behavior of two RC frames with available experimental data. Each frame was analyzed ten times with alternative lp values under pushover analysis using SAP2000 software. The two modeled frames displayed an average error ranging from 12.3% to 23% in the ultimate lateral load, and a deviation ranging from -30.4% to 20.1% in the initial lateral stiffness. These errors indicated that the accuracy of predicting the behavior of RC frames is highly dependent on the chosen lp equation. Finally, the proper lp equation which could represent the nonlinear behavior of RC frames accurately was recommended.
Keywords
RC frame; Plastic hinge; Plastic hinge length; Pushover analysis; SAP2000


Statistics Article View: 46 PDF Download: 50